Media: Replace consecutive periods in `sanitize_file_name()`.

On some servers, consecutive periods in a filename can cause a 403 Forbidden response.
This changeset replaces consecutive periods with a single period, and adds related unit tests.

Props ArtZ91, costdev, SergeyBiryukov, arthurshlain, mukesh27.
Fixes #57242.

Built from https://develop.svn.wordpress.org/trunk@55209


git-svn-id: http://core.svn.wordpress.org/trunk@54742 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/formatting.php

@@ -2047,6 +2047,7 @@ function sanitize_file_name( $filename ) {
 
 	$filename = str_replace( $special_chars, '', $filename );
 	$filename = str_replace( array( '%20', '+' ), '-', $filename );
+	$filename = preg_replace( '/\.{2,}/', '.', $filename );
 	$filename = preg_replace( '/[\r\n\t -]+/', '-', $filename );
 	$filename = trim( $filename, '.-_' );
 

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.2-alpha-55208';
+$wp_version = '6.2-alpha-55209';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.